cobalt front speakers stopped working

i have a 2006 cobalt, and the front speakers stopped working. first the right one quit, now the left. last week the left started again while parked at work for lunch, and when i went to start it it didnt work again.
i just wanted to see if anyone has had a similar issue and repaired it before i start ripping door panels and the dash apart

The factory speakers are cheap ones. They don't last. Usually there is is a terrible vibration from them because the paper cones tear. More than likely you need speakers. Either way you have to take something apart to check it out.